APA (7th ed.) Citation

Nyquist, R. B. Sons of the Vikings. Hutchinson.

Chicago Style (17th ed.) Citation

Nyquist, Roi B. Sons of the Vikings. London [u.a.]: Hutchinson.

MLA (8th ed.) Citation

Nyquist, Roi B. Sons of the Vikings. Hutchinson.

Warning: These citations may not always be 100% accurate.